Many school signs are shaped like a schoolhouse
        
             
        
        
        
The correct answer is A. When the subject of a sentence is singular, add "_s" to the base form.
An easy example is "to exist", the base form is "exist" and A strawberry exists shows that you add s when a singular subject is used.
        
                    
             
        
        
        
Answer:
They were expensive because people with special skills were needed to produce them.
Explanation:
The text doesn't say anything about the last two options, and not only wealthy people bought them. They weren't rare either. 
 
        
                    
             
        
        
        
The American Revolutionary War began in 1775.
        
             
        
        
        
A metaphor is a figure of speech that compares two different things that are not alike but have something in common. Therefore, the answer is choice "B"